Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ef9dd6e28bfab4…

MALICIOUS

PDF

78.6 KB Created: 2021-04-03 11:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bc6166c705029f8cbe21e40060a4b987 SHA-1: de978a7fc6aefaf6baf187e206b865351590ff15 SHA-256: e5ef9dd6e28bfab45bf1ec407434737cdba46495a1b006cb0e8e1acf8414bd24
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://baarspo.ru/wix?keyword=apk+mirror+hotspot+shield PDF link annotation
    • https://mezobemubuzopos.weebly.com/uploads/1/3/3/9/133997151/sorujo-jilurajek-demofifewo.pdfIn PDF document text
    • http://nozumupi.medianewsonline.com/vomipekexoguriboderedokar.pdfIn PDF document text
    • http://new-volosi.ru/present_simple_vs_present_continuous_exercise_online4ortq.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/44972685846.pdfIn PDF document text
    • https://gubagomokugexat.weebly.com/uploads/1/3/3/9/133988684/moxukek.pdfIn PDF document text
    • http://ig-soft-team.com/93811095728jhpmm.pdfIn PDF document text
    • http://megarafulosibef.22web.org/sodulixipotigixe.pdfIn PDF document text
    • http://subejewumo.scienceontheweb.net/ryobi_leaf_blower_40v_home_depot.pdfIn PDF document text
    • http://zilamuro.medianewsonline.com/dotofowamaxivupup.pdfIn PDF document text
    • http://bu-markett.com/prayer_for_a_peaceful_death_hindu4c0cu.pdfIn PDF document text
    • https://wudunuxez.weebly.com/uploads/1/3/1/4/131453857/padupaguvena.pdfIn PDF document text
    • http://businesslinecenter.com/puffin_web_browser_for_android_tv_apkq32h4.pdfIn PDF document text
    • http://bullbananavannaone.xyz/door_slammers_2_mod_apk_android_1qm7hs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gitipelut/fidir.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/amoeba_sisters_meiosis_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fd72f35-5e87-4110-8d0d-c95b4c98f5d6/how_does_a_furnace_sequencer_work.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/naruto_online_hack_tool.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7665d641-0adc-4a7b-8b1b-5c4ee0a53861/neopets_chemistry_for_beginners_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/jedeneseba.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/40748317894.pdfIn PDF document text
    • http://gadivedu.rf.gd/tracing_letter_n_worksheets_for_preschool.pdfIn PDF document text
    • http://judumiji.epizy.com/rudin_real_and_complex_analysis_solutions_chapter_3.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f73f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73F 5044 bytes
SHA-256: e881b2a1edaa719c77df527d8ffd8c2f9351ea21e1b22bc230e16d36b719efea
font_01_sfnt_off0001083b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1083B 10980 bytes
SHA-256: bb3ea8072fada88b02da4aa67b0ec39f025f9c650a23df342049757d1dfdbcb2

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